On 2 Aug 1999, Christopher Mack wrote:
> when using the NonlinearFit-function of Mathematica, I get an
> output like
>
> {a1 -> 0.00400772472374540367, a2 -> -1.90417580406264459*10^-6,
> a3 -> 499088.922439139537, a4 -> 1.31534993678125777*10^-9,
> a5 -> 7728.37550019371821}
>
> I'd like to convert this output to a vector with five elements
> (containing the values of a1 to a5 shown above).
>
> Can anybody tell me how to do this ?
This is an FAQ.
http://support.wolfram.com/Kernel/Basic/UsingRuleSolutions.html
The question is targeted toward extracting values from the results of
Solve[] or FindRoot[], but is is true for any function that returns its
results as a list of replacement rules.
--
P.J. Hinton
Mathematica Programming Group paulh at wolfram.com
Wolfram Research, Inc.
Disclaimer: Opinions expressed herein are those of the author alone.